Regulatory Signs... Stop... R1-1 Yield... R1-2 To Oncoming Traffic... R1-2a Multiway Stop 4-Way... R1-3 All Way... R1-4

Transcription

1 TABLE OF CONTENTS Preface... Sign Regulatory Signs... Stop... R Yield... R To Oncoming Traffic... R1-2a 1-3 Multiway Stop 4-Way... R All Way... R Speed Limit Signs Speed Limit R Trucks R Night R Minimum Speed R Speed Limit 50, Minimum R2-4a 1-9 Speed Limit sign array Reduced Speed Ahead... R2-5a 1-11 Reduced Speed R2-5b 1-12 Speed Zone Ahead... R2-5c 1-13 Metric (plaque)... R2-6a, 6b 1-14 Turn Prohibition No Right Turn (symbol)... R No Right Turn On Tracks... R3-1a 1-16 No Left Turn (symbol)... R No Left Turn On Tracks... R3-2a 1-18 No Turns... R No U-Turn (symbol)... R Lane-Use Control Mandatory Movement (arrow) with left lane plaque... R Mandatory Movement... R3-5a 1-22 Left Lane plaque... R3-5b 1-23 High Occupancy Vehicle R3-5c 1-23 Taxi Lane plaque... R3-5d 1-23 Center Lane plaque... R3-5e 1-23 Right Lane plaque... R3-5f 1-23 Optional Movement (arrows)... R Mandatory Turn (left)... R3-7L 1-24 Mandatory Turn (right)... R3-7R 1-25 Double Turn (arrows)... R Advance Intersection (arrows left)... R3-8a 1-27 Advance Intersection (arrows right)... R3-8b 1-28

2 Two-Way Left Turn Only Overhead Mounted... R3-9a 1-29 Post-Mounted... R3-9b 1-30 Reversible Lane Control Signs... R3-9c R3-9d R3-9e R3-9f R3-9g R3-9h R3-9i Preferential Lane Restricted Lane Ahead (post-mounted)... R Bus Lane Ahead... R3-10a 1-39 HOV 2+ ONLY (hours) overhead... R HOV 2+ ONLY (hours) Center Lane... R3-11a 1-41 Center Lane Buses Only... R3-11b 1-42 HOV 2+ Lane Ahead (overhead-mounted)... R HOV 2+ Lane Ends (post-mounted)... R3-12a 1-44 HOV 2+ ONLY 2 or More Persons per Vehicle (overhead-mounted)... R HOV 2+ ONLY (hours) (overhead-mounted)... R Bus & Taxi Only (overhead-mounted)... R3-14a 1-47 HOV Lane Ahead (overhead-mounted)... R HOV Lane Ends (overhead-mounted)... R3-15a 1-49 Bicycle Lane Ahead (symbol)... R Bicycle Lane Ends (symbol)... R3-16a 1-50 Right Lane Bicycle Only (symbol)... R Bicycle Lane with Vehicle Parking (symbol)... R3-17a 1-52 Do Not Pass... R Pass With Care... R Slower Traffic Keep Right... R Begin Right Turn Lane Yield To Bikes... R Uphill Traffic Lanes Trucks Use Right Lane... R Truck Lane 500 Feet... R Keep Right & Left Keep Right (symbol)... R Keep Right (with horizontal arrow)... R4-7a 1-60 Keep Right (with oblique arrow)... R4-7b 1-61 Keep Left (symbol)... R Stay In Lane... R Runaway Vehicles Only... R Do Not Enter... R Wrong Way... R5-1a 1-66

3 Selective Exclusion Signs No Trucks (symbol)... R No Trucks... R5-2a 1-68 No Motor Vehicles... R Commercial Vehicles Excluded... R Vehicles With Lugs Prohibited... R No Bicycles (symbol)... R Non Motorized Traffic Prohibited... R Motor Driven Cycles Prohibited... R Pedestrians Bicycles, Motor-Driven Cycles Prohibited... R5-10a 1-75 Pedestrians And Bicycles Prohibited... R5-10b 1-76 Pedestrians Prohibited... R5-10c 1-76 One Way Signs One Way (enclosed in right arrow)... R6-1(R) 1-77 One Way (enclosed in left arrow)... R6-1(L) 1-77 One Way (with right arrow)... R6-2(R) 1-78 Divided Highway (Four-Legged Intersection)... R Divided Highway (T-Intersection)... R6-3a 1-79 Urban Parking, Stopping and Parking Prohibition Signs No Parking Any Time... R No Parking 8:30 A.M. to 5:30 P.M.... R No Parking (symbol) 8:30 A.M. to 5:30 P.M.... R7-2a 1-80 No Parking Except Sundays and Holidays... R No Standing Any Time... R One Hour Parking 9 A.M. to 7 P.M.... R No Parking Loading Zone... R No Parking Bus Stop... R Reserved Parking (Handicapped)... R Van Accessable... R7-8a 1-83 No Parking Bike Lane... R No Parking (symbol) Bike Lane... R7-9a 1-85 No Parking Bus Stop... R No Parking (symbol) Bus Stop... R7-107a Hour Parking 8:30 A.M. to 5:30 P.M. & Variations... R No Parking Any Time & One Hour Parking 9 A.M. to 7 P.M.... R Tow-Away Zone... R Tow-Away Zone (symbol)... R7-201a 1-89 This Side Of Sign... R Parking Prohibition in Rural District and Emergency Parking Signs No Parking On Pavement... R No Parking Except On Shoulder... R

4 No Parking... R No Parking (symbol)... R8-3a 1-93 Except Sundays And Holidays (Plaque for R8-3a)... R8-3b 1-94 On Pavement (supplemental plaque)... R8-3c 1-95 On Bridge (supplemental plaque)... R8-3d 1-96 Emergency Parking Only... R No Stopping On Pavement... R No Stopping Except On Shoulder... R Emergency Stopping Only... R Do Not Stop On Tracks... R Tracks Out Of Service... R Pedestrian Signs Walk On Left Facing Traffic... R Cross Only At Crosswalks... R No Pedestrian Crossing (symbol)... R9-3a Use Crosswalk... R9-3b No Hitchhiking... R No Hitchhiking (symbol)... R9-4a Bicyclists (symbol) Use Pedestrian Signal... R Bicyclists (symbol) Yield To Pedestrians... R Travel-path Restriction... R Pedestrian Crosswalk... R Sidewalk Closed... R Crosswalk Closed Use Other Side... R Sidewalk Closed Ahead Cross Here... R Sidewalk Closed Cross Here... R9-11a Traffic Signal Signs Cross On Green Light Only... R Cross Only On Signal (symbol)... R10-2a Push Button For Green Light... R To Cross Street Push Button Wait For Green Light... R10-3a Educational plaque for pedestrian signals (symbols)... R10-3b Educational plaque for pedestrian signals... R10-3c Push Button For Walk Signal... R To Cross Street Push Button Wait For Walk Signal... R10-4a Push Button For Walk Signal (symbol)... R10-4b Left On Green Arrow Only... R Stop Here On Red... R Stop Here On Red (with curved arrow)... R10-6a Do Not Block Intersection... R Use Lane With Green Arrow... R Left (or Right) Turn Signal... R No Turn On Red... R10-11a No Turn On Red... R10-11b 1-123

5 No Right On Red (symbol)... R10-11c No Left On Red (symbol)... R10-11d Left Turn Yield On green Ball... R Emergency Signal... R Emergency Signal / Stop When Flashing Red... R Keep Off Median Sign... R Road Closed and Local Traffic Only Signs Road Closed... R Road Closed 10 Miles Ahead Local Traffic Only... R11-3a Bridge Out 10 Miles Ahead Local Traffic Only... R11-3b Road Closed To Thru Traffic... R Weight Limit Signs Weight Limit 10 Tons... R Weight Limit 9t... R Axle Weight Limit 5 Tons... R Axle Weight Limit 4.5t... R No Trucks Over 7000 lbs. Empty Weight... R No Trucks Over 3200 kg Empty Weight... R Weight Limit 2 Tons Per Axle 10 Tons Gross... R Weight Limit 1.8t Per Axle 9t Gross... R Weight Limit 8 T (symbol) 12 T (symbol) 16 T (symbol)... R Weight Limit 7.2t (symbol) 10.8t (symbol) 14.5t (symbol)... R All Trucks Commercial Vehicles Next Right... R Truck Route... R Hazardous Cargo... R Hazardous Cargo Prohibited... R National Network Route (symbol)... R National Network Prohibited (symbol)... R Railroad Crossbuck... R Railroad Crossing 3 Tracks... R Exempt... R Light Rail Right Lane Control... R15-4a Light Rail Center Lane Control... R15-4b Light Rail Left Lane Control... R15-4c Light Rail Do Not Pass... R Light Rail Do Not Pass Stopped Train (word message)... R15-5a Light Rail Don t Drive On Tracks... R Light Rail Do Not Drive On Tracks (plaque)... R15-6a Divided Highway With Light Rail Transit Crossing... R Divided Highway With Light Rail Transit Crossing (T-Intersection)... R15-7a Look (word message with arrow)... R Seat Belt (Symbol)... R

6 Temporary Traffic Control Signs... Turn... W Curve... W Reverse Turn... W Reverse Curve... W Large Arrow (1-direction)... W Chevron Alignment... W Stop Ahead (symbol)... W3-1a 2-7 Yield Ahead (symbol)... W3-2a 2-8 Signal Ahead (symbol)... W Be Prepared To Stop... W Merge... W Thru Traffic Merge Left... W4-1a 2-12 Lane Ends... W Added Lane... W Road Narrows... W Narrow Bridge... W Narrow Bridge (symbol)... W5-2a 2-17 One Lane Bridge... W Ramp Narrows... W Divided Highway (Road) (symbol)... W Divided Highway (Road) Ends... W Two Way Traffic (symbol)... W Opposing Traffic Lane Divider (symbol)... W Hill (symbol)... W Bump... W Dip... W Pavement Ends... W Soft Shoulder... W Slippery When Wet (symbol)... W Truck Crossing... W Loose Gravel... W Rough Road... W Low Shoulder... W Shoulder Drop-off (word message)... W8-9a 2-34 Uneven Lanes... W No Center Stripe... W Right (Left) Lane Ends... W Lane Ends Merge Left (Right)... W Center Lane Closed Ahead... W Crossing Signs Double Arrow Sign... W Low Clearance Sign... W Advisory Speed Plate... W

7 Advisory Exit Speed Signs On Ramp... W No Passing Zone Sign... W Construction Approach Warning Signs Road Work... W Detour... W Road (Street) Closed... W One Lane Road... W Right Lane Closed... W Right Two Lanes Closed XX Mile... W20-5a 2-50 Flagger (symbol)... W20-7a 2-51 Worker (symbol)... W21-1a 2-52 Fresh Oil (Tar)... W Road Machinery Ahead... W Shoulder Work... W Right Shoulder Closed... W21-5a 2-56 Right Shoulder Closed 1000 Feet... W21-5b 2-57 Survey Crew... W Utility Work Ahead... W Blasting Zone Ahead... W Turn Off 2-Way Radio and Phone... W End Blasting Zone... W Slow Traffic Ahead... W Stop Paddle Slow Paddle Length of Road Work Sign... G End Road Work... G Pilot Car... G Exit (plaque)... E1-1, E5-2, 2a 2-67 Detour Marker... M End Detour Marker... M4-8a 2-69 End Marker... M4-8b 2-69 Detour Sign (with arrow)... M Detour Arrow Sign... M Warning Signs... Winding Road... W Large Arrow (2-directions)... W Combination Horizontal Alignment / Speed Advisory... W Combination Horizontal Alignment / Inersection... W Cross Road... W Side Road (perpendicular)... W

8 Side Road (oblique)... W T Symbol... W Y Symbol... W Circular Intersection... W Stop Ahead... W Yield Ahead... W Signal Ahead... W3-3a 2-84 Cross Traffic Does Not Stop (plaque)... W4-4p 2-85 Bikeway Narrows... W5-4a 2-86 Divided Highway (word message)... W6-1a 2-87 Divided Road (word message)... W6-1b 2-88 Divided Highway Ends (word message)... W6-2a 2-89 Hill Signs Hill (word message)... W7-1a 2-90 Hill (Percent Grade)... W7-1b 2-91 Use Low Gear... W Trucks Use Lower Gear... W7-2b % Grade... W Next 7 Miles... W7-3a % Grade 7 Miles... W7-3b 2-93 Runaway Truck Ramp 1 Mile... W Runaway Truck Ramp (with arrow)... W7-4b 2-94 Truck Escape Ramp... W7-4c 2-95 Hill (bicycle symbol)... W Hill (plaque)... W7-5a 2-96 Bicycle Surface Condition Warning... W Slippery When Wet (plaque)... W8-10p 2-97 Center Lane Closed (symbol) Alternate... W9-3a 2-98 Railroad Railroad Advance Warning Signs... W Exempt... W10-1a W10-2 W10-3 W Rail-highway Low Ground Clearance (symbol)... W Light Rail Activated Blank Out... W Trains May Exceed (XX) MPH... W No Train Horn (word message)... W No Signal (word message)... W Storage Space (symbol)... W Storage Space (word message)... W10-11a Storage space w/tracks behind You... W10-11b 2-110

9 Advance Crossing Signs Bicycle (symbol)... W Pedestrian (symbol)... W Deer (symbol)... W Cattle (symbol)... W Farm Machinery (symbol)... W Farm Machinery Symbol Alternate... W11-5a Snowmobile (symbol)... W Equestrian (symbol)... W Fire Station (symbol)... W Handicapped Crossing (symbol)... W Truck (symbol)... W Golf Cart Crossing (symbol)... W Emergency Signal Ahead (word message)... W11-12p Low Clearance Sign (plaque)... W12-2p Advisory Speed Limit Exit 25 M.P.H.... W Ramp 30 M.P.H... W Curve 25 MPH... W Dead End Signs Dead End... W Dead End (plaque)... W14-1p No Outlet... W No Outlet (plaque)... W14-2p Playground Sign (symbol)... W Share the Road... W Feet / Meter (1-line rectangle)... W Feet / Meter (2-line rectangle)... W16-2a Miles (2-line rectangle)... W Miles (1-line rectangle)... W16-3a Next 500 Feet (2-line rectangle)... W Supplemental Warning Arrows... W16-5p W16-6p W16-7p Advance Street Name Plaques... W Ahead (plaque)... W16-9p Speed Hump (word message)... W Flagger... W Workers... W

10 Guide Signs... Route Markers Interstate Shield for Independent and Guide Sign Use... M Off-Interstate Business Loop Marker... M Off-Interstate Business Spur Marker... M U.S. Route Marker for Independent and Guide Sign Use... M State Route Marker... M County Route Marker... M Forest Route Marker... M Bicycle Route Marker... M Bicycle Interstate Route Marker... M Eisenhower Interstate System... M Eisenhower Interstate System (alternate)... M1-10a 3-11 Route Marker Auxiliaries Junction Marker... M Combination Junction Sign... M Cardinal Direction Marker - North... M Cardinal Direction Marker - East... M Cardinal Direction Marker - South... M Cardinal Direction Marker - West... M Alternate Marker... M Alt Marker... M4-1a 3-15 Bypass Marker... M Business Route Marker... M Truck Route Marker... M To Marker... M End Marker... M Temporary Marker... M Supplemental Plaques Begin, End To (bicycles)... M4-11, 12, Advance Turn Arrow... M5-1, 2, M Directional Arrows... M6-2, 3, M6-5, 6, M6-8, Bicycle Directional Arrows... M7-1, 2, 3, M7-5, 6, Destination Sign... D Destination Sign... D1-1a 3-25 Supplemental Plaques to Bicycle Route Sign... D1-1b 3-26 Supplemental Plaques to Bicycle Route Sign... D1-1c 3-26 Destination Sign... D Destination Sign... D1-2 a 3-27 Destination Sign... D Destination Sign... D1-3a 3-28 Distance Sign... D2-1, 2,

11 Street Name Sign... D Parking Area Sign... D Park & Ride Sign... D Bicycle Parking Sign... D Rest Area Signs Rest Area 1 Mile... D Rest Area (with Arrow)... D Parking Area 1 Mile... D Parking Area (with Arrow)... D Roadside Table (with Arrow)... D Roadside Table (symbol)... D5-5a 3-36 Scenic Area Signs Scenic Area (with Arrow)... D Scenic Overlook X Miles... D Scenic Overlook (with Arrow)... D Recreational and Cultural Interest Area Signs Rocky Mountain National Park 6 Miles... D Rocky Mountain National Park... D Weigh Station Signs Weigh Station 1 Mile... D Weigh Station Next Right... D Weigh Station (with Exit Arrow)... D General Service Signs Telephone (symbol)... D Telephone (symbol) with arrow... D9-1a 3-44 Telephone (symbol) 1/4 Mile... D9-1b 3-45 Hospital (symbol)... D Camping (symbol)... D Trailer Camping (symbol)... D9-3a 3-48 Trash Receptacle (symbol)... D International Symbol of Access for the Handicapped... D Gas (symbol)... D Food (symbol)... D Lodging (symbol)... D Tourist Information (symbol)... D Diesel Fuel (symbol)... D Alternative Fuel (symbol)... D9-11a 3-56 Recreational Vehicle Sanitary Station (symbol)... D Emergency Medical Services (symbol)... D Police Assistance... D Propane Gas... D Truck Parking (word message)... D

12 Milepost Markers... D10-1, 2, Bike Route Guide... D Radio Information... D Car Pool Information... D Police Monitor CB... D Traveler Info Call... D Crossover Direction Arrow... D Crossover... D Traffic Signal Speed... I General Information Signs State Line... I Geographical interest or boundary... I Trail (symbol)... I Airport (symbol)... I Bus Station (symbol)... I Train Station (symbol)... I Library (symbol)... I Library (plaque)... I-8p 3-76 Marina (symbol)... I Winter Sports (symbol)... I Recycling Collection Center (symbol)... I Crossing Identification and Number sign... I Crossing Identification and Number sign (Alternate)... I-13a 3-81 Motorist Services Symbol Sign Tourist Information Center Signs Advance Rest Area Exit Direction Rest Area Rest Area Gore Welcome Center Signs Advance Rest Area Exit Direction Rest Area Exit Direction Rest Area (Alternate) Supplemental Tourist Information-Welcome Center Signs Recreational and Cultural Interest Area Signs... General Information (RG Series) Automobile... RG Bear Viewing Area... RG Dam... RG

13 Deer Viewing Area... RG Drinking Water... RG Environmental Study Area... RG Falling Rock... RG Firearms... RG Fish Hatchery... RG Information... RG Leashed Pets... RG Lighthouse... RG Litter Container... RG Lookout Tower... RG Pedestrian Crossing... RG Point of Interest... RG Ranger Station... RG Smoking... RG Truck... RG Tunnel... RG Dog... RG Seaplane... RG Motorist Services (RM Series)... Camping (Tent)... RM Camping (Trailer)... RM Ferry... RM First Aid... RM Food... RM Gas... RM Grocery Store... RM Handicapped (Access Symbol)... RM Lodging... RM Mechanic... RM Post Office... RM Picnic Area... RM Picnic Shelter... RM Rest Room... RM Telephone... RM Trailer Sanitary Station... RM Viewing Area... RM Motor Home... RM Group Camping... RM Group Picnicking... RM Accommodation Services (RA Series)... Airport... RA Bus Stop... RA Campfire... RA

14 Elevator... RA Kennel... RA Laundry... RA Locker... RA Parking... RA Rest Rooms (Men)... RA Rest Rooms (Women)... RA Shelter (Sleeping)... RA Shelter (Trail)... RA Showers... RA Family Rest Room... RA Helicopter... RA Land Recreation (RL Series)... Amphitheater... RL Climbing... RL Climbing (Rock)... RL Hunting... RL Playground... RL Rock Collecting... RL Spelunking... RL Stable... RL Trail (Bicycle)... RL Trail (Hiking)... RL Trail (Horse)... RL Trail (Interpretative, Auto)... RL Trail (Interpretative, Pedestrian)... RL Trail/Road (4-WD Vehicle)... RL Trail (Trail Bike)... RL Tramway... RL All-Terrain Vehicle... RL Archer... RL Hang Glider... RL Water Recreation (RW Series)... Boat Tours... RW Canoeing... RW Diving... RW Diving (Scuba)... RW Fishing... RW Marina... RW Motorboating... RW Ramp (Launch)... RW Rowboating... RW Sailboating... RW Skiing (Water)... RW

15 Surfing... RW Swimming... RW Wading... RW Fishing Pier... RW Hand Launch... RW Kayak... RW Wind Surf... RW Winter Recreation (RS Series)... Skating (Ice)... RS Ski Jumping... RS Skiing (Bobbing)... RS Skiing (Cross Country)... RS Skiing (Downhill)... RS Sledding... RS Snowmobiling... RS Snowshoeing... RS Winter Recreation Area... RS Ski Lift... RS Emergency Management & Civil Defense Signs... Evacuation Route... EM Area Closed Sign... EM Traffic Control Point... EM Maintain Top Safe Speed... EM Road (Area) Use Permit Required for Thru Traffic... EM Emergency Aid Centers Signs... Medical Center... EM-6a 4-4 Welfare Center... EM-6b 4-4 Registration Center... EM-6c 4-5 Decontamination Center... EM-6d 4-5 Shelter Directional Signs... Emergency Shelter... EM-7a 4-6 Hurricane Shelter... EM-7b 4-6 Fallout Shelter... EM-7c 4-7 Chemical Shelter... EM-7d 4-7 School Signs... School Sign (symbol)... S School Bus Stop Ahead... S School Speed Limit Signs 8:30 A.M. to 5:30 P.M.... S When Children Are Present... S School... S

16 When Flashing... S Speed Limit 20 When Flashing... S End School Zone... S (XXX Feet) 2 line... W (XXX Feet) 1 line... W16-2a Ahead (plaque)... W16-9p Diagonal Arrow... W16-7p Appendix... Standard Arrow Arrow Details Up and Down Arrows (for use with Guide Signs) Symbols... Truck T T Bicycle Open Hand STOP Hitch-hiking Pedestrian walking Towing Fuel pump Rail-highway Low Ground Clearance Recycle Fire Truck Flashing Beacon Light Rail Car Automobile (front) Divided Highway with Light Rail Crossing Seat Belt Narrow Bridge Hill symbol Slippery When Wet Railroad Tracks Deer Cattle Farm Machinery Farm Machinery (alternate) Snowmobile Equestrian Handicapped Golf Cart Bus Playground Flagger National Forest logo

17 Bicycle Interstate Route Marker Shield Eisenhower Five Star Symbol Eisenhower Interstate System Lettering Car Pool Roadside Table Telephone Camping Camping Trailer Trash Receptacle Food Lodging Tourist Information Recreational Vehicle Sanitation Station Emergency Medical Services Propane Trail Airport Train Station Library Civil Defense Logo Civil Defense Symbol School Children Worker Boat Anchor - Marina Snowflake All Terrain Vehicle Blank Standards 7-1 Octagon & Equilateral Triangle Vertical Rectangle & Square Diamond & Horizontal Rectangle Interstate Shield, U.S. Shield, Pentagon (School) & Country Shield Circle, National Forest Shield & Isosceles Triangle Symbolic Pedestrian Signal Indications Design Guidelines , 2, 3 Diagrammatic Signs... Example Example Example Example Example

18 Interchange, Exit, Pull-Through... Interchange Advance Guide Sign (with U.S. Route Marker)... E1-1a 8-9 Interchange Advance Guide Sign (Alternate)... E Exit, Next Exit Advance... E1-5, E2-1, 1a 8-10 Exit with interchange number... E5-1a 8-11 Pull-Through Signs... E6-2, 2a 8-12 Post-Interchange Distance Sign... E Exit Only panels... E11-1, 1a, 8-14 Exit Only panels... E11-1b, 1c 8-15 Standard Alphabets Series2000 for Sign Usage thru 9-52 Pavement Markings thru Object Markers Type 1... OM1-1, 2, Type 2... OM2-1V, 2V, 1H, 2H 11-2 Type3... OM-3L, 3C, 3R 11-3 End Of Road... OM4-1,

19 PREFACE Detailed drawings of the Standard Highway Signs prescribed or provided for in the Manual on Uniform Traffic Control Devices (MUTCD), 2000 Millennium Edition, have been prepared by the Office of Transportation Operations, Federal Highway Administration, U.S. Department of Transportation, for use by all traffic authorities, agencies, jurisdictions and persons involved with the fabrication, installation and maintenance of traffic signs on streets and highways in the United States. These drawings are presented in metric design units and are provided to promote uniformity in design throughout the United States in accordance with Title 23, U.S., Sections 109(b), 109(d) and 402(a) and Highway Safety Program Standard 13, "Traffic Engineering Services." As stated in the MUTCD, "Uniformity in design includes shape, color, dimensions, legends and reflectorization. This manual shows many typical signs approved for use on streets and highways. Detailed drawings of these and other approved signs are available to State and local highway and traffic authorities and similarly interested agencies. All symbols shall be unmistakably similar to those shown and where a word message is applicable, the wording shall be as herein provided unless alternative wording is optional. Most standard symbols are oriented facing left; however, this does not preclude the use of mirror images of these symbols where the reverse orientation might better convey to vehicle operators a direction of movement. Standardization of these designs does not preclude further improvement by minor changes in the proportion of the symbols, width of borders, or layout of word messages, but all shapes and colors shall be as indicated." The format herein utilizes metric units. A soft conversion from the standard English measure has been used. For example, an 18 inch sign is now represented as 450 millimeters as opposed to millimeters. It should be noted that the difference is only 1.015% and any of these layouts can be applied to any standard English measure blank size by simply scaling up all dimensions by a factor of 1.015%. An attempt has been made to provide uniformity of specific design details between two or more different types of signs having approximate sizes. Additionally, details for arrows and other items have been standardized as much as possible to facilitate fabrication of the signs and for national uniformity. For word messages, only the overall length and placement of the characters are shown. Only the Series2000 Standard Alphabet spacing charts may be used to determine overall length. The spacing between individual character combinations can be adjusted visually to attain the most satisfying balance. Where spacing between individual letters has been reduced or increased the dimension is noted by an asterisk on the plate dimension detail. Any such change represents a deviation from the full spacing as suggested in the spacing charts on the following pages. For symbol messages, the overall height and width of the symbol and its placement on the sign is shown. The exact detail of the symbol is shown on a grid. All symbols and symbol drawings are contained in the Appendix in section 6. Any symbol may be enlarged to any size if done proportionally. The grid is provided as a reference to ensure the proportional relationship(s) remain correct. The Standard Highway Signs book prescribes design details for up to five different sizes

20 depending on the type of traffic facility including bikeways. Smaller sizes are designed to be used on bikeways and some other off-road applications. Larger sizes are designed for use on freeways expressways, and can also be used to enhance road user safety and convenience on other facilities, especially on multilane divided highways and on undivided highways having five or more lanes of traffic and/or high speeds. The intermediate sizes are designed to be used on twolane, three-lane and four-lane highways that have low speeds and volumes. used on roadways, bicycle paths, or shared paths. The 12" size shall only be used as a minimum size for regulatory and warning signs on off-road snowmobile and all-terrain vehicle (ATV) trails and on footpaths used exclusively by pedestrians. The 12" size may be used seasonally on unplowed roads that are designated specifically as seasonal snowmobile or ATV trails, but such 12" signs shall be removed and replaced with standard size signs for seasons in which such roads are used by regular (i.e., non-snowmobile, non-atv) motor vehicles and/or bicycles. The sign sizes are found in the appropriate sections of the Manual on Uniform Traffic Control Devices ( The decision to use the most appropriate sign sizes is the responsibility of the street or transportation agency or engineer having authority over the traffic facility. Studies have shown that as drivers age and as traffic volumes and speed increase, larger traffic signs are needed for safer roadway operations. Except for the special seasonal situation described below, the 12" minimum size shall not be